Erin was a spiritual entity whose only human-like quality was her human-like strong emotions which was why she had grown attached to Albert even though their marriage had only been a formality to keep them close to each other as he was serving as a replacement for her source.
However, she always felt in the back of her mind that their relationship was not meant to last as she could never fully accomplish a wife's duties to completely take care of and satisfy her husband due to her nature as a water nymph.
After all, even though she seemed to have a seductive physical body that could be touched, she couldn't engage in any sorts of explicit activities with her supposed husband as her race could not mate with mortals as they did not reproduce in the same way or at all.
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